vulnerability
MediaWiki: CVE-2021-45472: Improper Neutralization of Input During Web Page Generation
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:N/I:P/A:N) | Dec 24, 2021 | Dec 30, 2021 | May 6, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Dec 24, 2021
Added
Dec 30, 2021
Modified
May 6, 2026
Description
In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.
Solution
mediawiki-upgrade-latest
References
- CVE-2021-45472
- https://attackerkb.com/topics/CVE-2021-45472
- https://gerrit.wikimedia.org/r/q/I37ece1dfdc80d38055067c9c4fa73ba591acd8bd
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/
- https://phabricator.wikimedia.org/T297570
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-32238
- CWE-79
- EUVD-EUVD-2021-32238
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